Performance Audit
One-time / 1-2 Days
Complete analysis: Profiling, bottleneck identification, action plan with ROI estimate.
2,500 EUR
Book AuditHigh-Performance Backends
Backends that don't buckle under load.
Symfony, Go, Event-Driven Architecture. I build systems that handle 10x more traffic than originally planned. For when standard developers hit their limits.
When You Need Me
I take over when standard solutions are no longer enough:
Performance Bottlenecks
API responses over 500ms? Database queries blocking everything? I find the bottlenecks and solve them - often with 10x improvement.
Scaling Problems
Traffic growing but architecture not keeping up? I design systems that scale horizontally - without a big-bang rewrite.
Monolith to Microservices
Monolith grown too large? I extract services using the Strangler Pattern - step by step and without risk.
Async & Event-Driven
Synchronous processes blocking your system? I implement Event-Driven Architecture for asynchronous, resilient systems.
Backend Stack
Proven technologies for scalable, maintainable systems
Specialized Backend Services
Focus on architecture and performance, not feature factories
Performance Engineering
Systematic performance optimization through profiling, query analysis, and architecture improvements.
- Application Profiling (Blackfire, XDebug)
- Query Optimization & Indexing
- Caching Strategies (Redis, Varnish)
- Async Processing (RabbitMQ, Kafka)
API Architecture
High-performance APIs with clear structure, versioning, and rate limiting for enterprise requirements.
- REST & GraphQL Design
- API Gateway & Rate Limiting
- OpenAPI/Swagger Documentation
- Versioning & Breaking Changes
Event-Driven Systems
Resilient systems with message queues, event sourcing, and CQRS for complex business logic.
- Message Queue Integration
- Event Sourcing Patterns
- CQRS Implementation
- Saga & Choreography Patterns
Cloud Architecture
Infrastructure as code, container orchestration, and cloud-native patterns for production-ready deployments.
- Docker & Kubernetes
- AWS / GCP Architecture
- Infrastructure as Code (Terraform)
- CI/CD Pipeline Design
My Approach: Measure Before Optimizing
No premature optimization. First understand, then act.
1. Establish Baseline
Set up profiling, load tests, monitoring. Without numbers, no real optimization - just assumptions.
2. Find Bottleneck
Identify the 20% that causes 80% of problems. Focus on real bottlenecks, not theory.
3. Improve Iteratively
Small changes, measure, validate. Every optimization must be provable - no flying blind.
Investment
Backend work is architecture work - that's reflected in the investment
Architecture Project
Project / 2-8 Weeks
Complete backend optimization or service extraction with measurable performance gains.
from 8,000 EUR
Discuss ProjectRetainer
Ongoing / 1 Day/Week
Continuous architecture consulting, code reviews, and mentoring for your dev team.
3,500 EUR/Month
DetailsBackend Problems? Let's Talk.
Free 30-minute conversation. I listen, ask questions, and give an honest assessment - whether and how I can help.
Häufige Fragen
Why Symfony and Go?
Symfony for complex business logic with a proven ecosystem. Go for high-performance services that need to perform under load. I choose based on the problem, not the trend.
How do you measure performance improvements?
With concrete metrics: Response Time (p50, p95, p99), Throughput, Error Rate. Before and after every change. No "feels faster", only measurable improvements.
Can you also do frontend development?
Yes, but that's not my focus. My value lies in backend architecture and performance. For frontend work, there are better specialists - I'm happy to connect you.
What about Microservices vs. Monolith?
It depends. Monoliths are often the right choice - easier to develop and deploy. Microservices solve scaling and team problems, not code problems.